Usain Bolt was declared as the fastest man in the world in 2009. He set a world record of 9.58 seconds in the 100 meters sprint which adds up to 10.44 meters per second or 37.5 Kph.
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According to his last race, Usain Bolt completed the 100 metres in an almost inhuman 9.58 seconds. As for the 200 metres, his time of 19.19 seconds was so extraordinary, so jaw-dropping; it left the Olympic stadium momentarily stunned into silence.